ActiveModelWarnings

Compliant validations for ActiveModel. This is useful when you want to define optional validations for a resource and keep it valid.

Adds compliant? and warnings methods to ActiveModel::Validations that are similar to valid? and errors but for warnings.

See ActiveModel::Validations.

Installation

Add this line to your application's Gemfile:

gem 'active_model_warnings'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install active_model_warnings

Usage

ActiveRecord

class User < ActiveRecord::Base
  attr_accessor :password
  validate :password_length  # may cause an error
  validate :blank_password   # may cause a warning

  private

  def password_length
    warnings.add(:password, "min length should be 5") if password.length < 5
  end

  def blank_password
    errors.add(:password, 'should not be blank') if password.length == 0
  end
end

user = User.new(:password => 'safe')
user.valid?
# => true
user.compliant?
# => false

ActiveModel

class User
  include ActiveModel::Validations
  attr_accessor :password

  validate :blank_password  # may cause an error
  validate :password_length # may cause a warning

  def initialize(password)
    @password = password
  end

  private

  def blank_password
    errors.add(:password, 'should not be blank') if password.length == 0
  end

  def password_length
    warnings.add(:password, "min length should be 5") if password.length < 5
  end
end

user = User.new('safe')
user.valid?
# => true
user.compliant?
# => false

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/babasbot/active_model_warnings. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

TODO

• Support for ActiveModel::Validations::HelperMethods.

License

The gem is available as open source under the terms of the MIT License.